Malicious PDF — malware analysis report

Static analysis result for SHA-256 a89d969aaaa75328…

MALICIOUS

PDF

71.5 KB Created: 2021-03-11 01:22:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 98a8b1da5751a9430265f7bb3224b038 SHA-1: aca77249a780973a19bec9cbb4473f0aba4158c0 SHA-256: a89d969aaaa7532854228e21ca14f0ec063718d20362ac346bd4c7235228b755
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://bologen.ru/award?keyword=calendario+laboral+2020+gipuzkoa+pdf PDF link annotation
    • https://balimalovi.weebly.com/uploads/1/3/2/7/132710770/5611366.pdfIn PDF document text
    • https://cdn.sqhk.co/nefakovuwot/hiiagcC/wunuduginafube.pdfIn PDF document text
    • https://cdn.sqhk.co/gizapakoni/7jjgigh/97029705395.pdfIn PDF document text
    • https://zitakafe.weebly.com/uploads/1/3/4/5/134587302/5607005.pdfIn PDF document text
    • http://1offpark.xyz/retajinumivtz8x8.pdfIn PDF document text
    • https://begosibaluta.weebly.com/uploads/1/3/0/7/130775163/34ba0.pdfIn PDF document text
    • https://libodarupebixab.weebly.com/uploads/1/3/0/9/130969674/jajivumu-ponoxo-suvukiwul.pdfIn PDF document text
    • https://jumuvive.weebly.com/uploads/1/3/0/7/130776409/dedomanalatakeji.pdfIn PDF document text
    • https://cdn.sqhk.co/vasibejovej/hfCyd8y/64316386876.pdfIn PDF document text
    • https://divojalu.weebly.com/uploads/1/3/4/6/134664609/6badda.pdfIn PDF document text
    • http://formverifiedbadge.com/jubiwegidodaxudlxwh3.pdfIn PDF document text
    • https://pufujodixig.weebly.com/uploads/1/3/1/4/131438007/506593.pdfIn PDF document text
    • https://cdn.sqhk.co/pemenodisoda/chigeja/54082335147.pdfIn PDF document text
    • http://info-pages.ru/free_resume_templates_for_ipad4oa80.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rukosivujuxu.atwebpages.com/mathematics_books_for_class_2.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/dont_change_the_subject_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/beloxagifog.pdfIn PDF document text
    • http://vorisenunajix.myartsonline.com/34947425974.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD661 5464 bytes
SHA-256: 46c8649ed7a51ef1da66d430e7d5bc9500e67f51342342f7af36866cde0dc119
font_01_sfnt_off0000e90b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE90B 11780 bytes
SHA-256: 85474a7abf01088a9ee72dd34642c449abf010d89633282fc8fad882ca087481

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